Physics
Which statement best describes an igneous intrusion?

Magma is exported to an open area and forms iron
Magma is injected into surrounding rock forming an igneous intrusive
Igneous intrusion for when ice crystals splash into lava
Magma explodes to the surface and forms a smooth outer layer of rock

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Physics
The Hooke's law is valid for

Entire stress strain curve
Elastic as well as plastic region of the stress strain curve
Only proportional region of the stress strain curve
Entire elastic region of the stress strain curve

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